Use this procedure to modify a parameter value with regedit.
To edit Oracle-related settings:
Start Registry Editor in one of the two ways:
From the command prompt, enter:
C:\> regedit
From the Start menu, select Run, enter regedit in the Open field, and click OK.
The Registry Editor window appears.
Navigate to the values you want to view or modify by double-clicking appropriate keys.
The left-hand side of the window shows the hierarchy of the registry keys, and the right-hand side of the window shows the various values associated with a key.
Double-click the parameter to change the value data to the new SID.